BU association and resource allocation in integrated PON-WiMAX under inter-cell cooperative transmission

In this paper, we address the issue of base station user association and resources allocation (BUA-RA) in OFDM-TDMA based broadband wireless access (BWA) networks under PON-WiMAX integration. With the powerful coordination capability at the optical line terminal (OLT), a key technology of inter-cell cooperative transmission (CT) is incorporated in the integrated network architecture, which is so called cooperative PON-WiMAX network (CPWN). To achieve efficient integration and inter-cell CT in the CPWN, BUA-RA is critical to the QoS provisioning for each user. We provide three new BUA-RA schemes aiming at minimizing the number of rejected connection requests of users´ demands according to the current network resource utilization and wireless users´ moving speeds. Simulations are conducted to verify the proposed BUA-RA schemes by comparing with the conventional non-cooperative transmission (NCT) approach. The results demonstrate the efficiency of the proposed BUA-RA schemes.